The get_next_block function in archival/libarchive/decompress_bunzip2.c in BusyBox 1.27.2 has an Integer Overflow that may lead to a write access violation.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://git.busybox.net/busybox/commit/?id=0402cb32df015d9372578e3db27db47b33d5c7b0 | issue tracking third party advisory patch |
| https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html | third party advisory mailing list |
| https://bugs.busybox.net/show_bug.cgi?id=10431 | issue tracking exploit third party advisory |
| https://usn.ubuntu.com/3935-1/ | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2021/02/msg00020.html | third party advisory mailing list |